{56 ASILUS, BALZENA. 
S—i2. Asitus. Spec 48. 
estuans, (hornet-fly,) cinereous, having the three 
last segments of the body white. 
estivus, cinereous, having three black fines on the 
thorax ; legs dark coloured ; shanks testaceous. 
See MS. P. 
40—1,. ASTERIAS.. ,Spec.: Sie 
aculeata, (sea-star,) rays five; disk orbicular, 
covered with glabrous prickles. 
aranciaca, rays somewhat depressed and prickly 
along the margin; disk broad. 
caput meduse, (medusa’s head,) five rays perpetu- 
ally bifurcaie into numerous branches. 
See MS. P. 
4-4, ATHERINA.. Spec. 5. 
menidia, (silver-fish,) anal fin 24-rayed ; body 
small, pellucid, spotted. 
See MS. P. 
8—5. ATTELABUS. Spec. 37. 
pensylvanica, black ; shells reddish, with a black 
band in the middle and at the tip. 
See MS. P. 
B. 
14—1. Bacriuarria. Spec. 1. 
paradoxa, (straw-threads,) perpetually changing 
its appearance, so that it might at one moment 
be taken for a different species from that of the 
preceding moment. 
See MS. P. 
1—8. Batzena. Spec. 8. 
mysticetus, (common whale,) nostrils flexuous, on 
the forepart of the head; dorsal fin none. 1 Var. 
